dominik/public/admin/controller/extension/module/wd_banners.php

<?php
class ControllerExtensionModuleWDBanners extends Controller {
	private $error = array();

	public function index() {
		
		$this->load->language('extension/module/wd_banners');
		
		$this->document->setTitle(strip_tags($this->language->get('heading_title')));

		$this->load->model('setting/module');
		$this->load->model('localisation/language');
		$this->load->model('design/banner');

		if (($this->request->server['REQUEST_METHOD'] == 'POST') && $this->validate()) {
			if (!isset($this->request->get['module_id'])) {
				$this->model_setting_module->addModule('wd_banners', $this->request->post);
			} else {
				$this->model_setting_module->editModule($this->request->get['module_id'], $this->request->post);
			}

			$this->session->data['success'] = $this->language->get('text_success');

			$this->response->redirect($this->url->link('marketplace/extension', 'user_token=' . $this->session->data['user_token'] . '&type=module', true));
		}

		$data['heading_title'] = $this->language->get('heading_title');

		if (isset($this->error['warning'])) {
			$data['error_warning'] = $this->error['warning'];
		} else {
			$data['error_warning'] = '';
		}

		if (isset($this->error['name'])) {
			$data['error_name'] = $this->error['name'];
		} else {
			$data['error_name'] = '';
		}
		
		if (isset($this->error['twig'])) {
			$data['error_twig'] = $this->error['twig'];
		} else {
			$data['error_twig'] = '';
		}

		$data['breadcrumbs'] = array();

		$data['breadcrumbs'][] = array(
			'text' => $this->language->get('text_home'),
			'href' => $this->url->link('common/dashboard', 'user_token=' . $this->session->data['user_token'], true)
		);

		$data['breadcrumbs'][] = array(
			'text' => $this->language->get('text_extension'),
			'href' => $this->url->link('marketplace/extension', 'user_token=' . $this->session->data['user_token'] . '&type=module', true)
		);

		if (!isset($this->request->get['module_id'])) {
			$data['breadcrumbs'][] = array(
				'text' => $this->language->get('heading_title'),
				'href' => $this->url->link('extension/module/wd_banners', 'user_token=' . $this->session->data['user_token'], true)
			);
		} else {
			$data['breadcrumbs'][] = array(
				'text' => $this->language->get('heading_title'),
				'href' => $this->url->link('extension/module/wd_banners', 'user_token=' . $this->session->data['user_token'] . '&module_id=' . $this->request->get['module_id'], true)
			);
		}

		if (!isset($this->request->get['module_id'])) {
			$data['action'] = $this->url->link('extension/module/wd_banners', 'user_token=' . $this->session->data['user_token'], true);
		} else {
			$data['action'] = $this->url->link('extension/module/wd_banners', 'user_token=' . $this->session->data['user_token'] . '&module_id=' . $this->request->get['module_id'], true);
		}

		$data['cancel'] = $this->url->link('marketplace/extension', 'user_token=' . $this->session->data['user_token'] . '&type=module', true);

		if (isset($this->request->get['module_id']) && ($this->request->server['REQUEST_METHOD'] != 'POST')) {
			$module_info = $this->model_setting_module->getModule($this->request->get['module_id']);
		}
		
		$data['THEME'] = $this->config->get('theme_'.$this->config->get('config_theme').'_directory');
		if (isset($this->request->post['name'])) {
			$data['name'] = $this->request->post['name'];
		} elseif (!empty($module_info)) {
			$data['name'] = $module_info['name'];
		} else {
			$data['name'] = '';
		}
		
		if (isset($this->request->post['sizes'])) {
			$data['sizes'] = $this->request->post['sizes'];
		} elseif (!empty($module_info)) {
			$data['sizes'] = $module_info['sizes'];
		} else {
			$data['sizes'] = [];
		}
	
		if (isset($this->request->post['banner_id'])) {
			$data['banner_id'] = $this->request->post['banner_id'];
		} elseif (!empty($module_info['banner_id'])) {
			$data['banner_id'] = $module_info['banner_id'];
		} else {
			$data['banner_id'] = '';
		}

		$data['banners'] = $this->model_design_banner->getBanners();
		
		if (isset($this->request->post['fullwidth'])) {
			$data['fullwidth'] = $this->request->post['fullwidth'];
		} elseif (!empty($module_info['fullwidth'])) {
			$data['fullwidth'] = $module_info['fullwidth'];
		} else {
			$data['fullwidth'] = '';
		}
		
		if (isset($this->request->post['twig'])) {
			$data['twig'] = $this->request->post['twig'];
		} elseif (!empty($module_info['twig'])) {
			$data['twig'] = $module_info['twig'];
		} else {
			$data['twig'] = '';
		}
		
		if (isset($this->request->post['include'])) {
			$data['include'] = $this->request->post['include'];
		} elseif (!empty($module_info['include'])) {
			$data['include'] = $module_info['include'];
		} else {
			$data['include'] = '';
		}
		
		if (isset($this->request->post['hide'])) {
			$data['hide'] = $this->request->post['hide'];
		} elseif (!empty($module_info['hide'])) {
			$data['hide'] = $module_info['hide'];
		} else {
			$data['hide'] = '';
		}
		
		$data['languages'] = $this->model_localisation_language->getLanguages();

		if (isset($this->request->post['status'])) {
			$data['status'] = $this->request->post['status'];
		} elseif (!empty($module_info)) {
			$data['status'] = $module_info['status'];
		} else {
			$data['status'] = '';
		}

		$data['header'] = $this->load->controller('common/header');
		$data['column_left'] = $this->load->controller('common/column_left');
		$data['footer'] = $this->load->controller('common/footer');

		$this->response->setOutput($this->load->view('extension/module/wd_banners', $data));
	}

	protected function validate() {
		if (!$this->user->hasPermission('modify', 'extension/module/wd_banners')) {
			$this->error['warning'] = $this->language->get('error_permission');
		}

		if ((utf8_strlen($this->request->post['name']) < 3) || (utf8_strlen($this->request->post['name']) > 64)) {
			$this->error['name'] = $this->language->get('error_name');
		}
		
		$theme_path = $this->config->get('theme_' . $this->config->get('config_theme') . '_directory');
		
		if(!file_exists(DIR_CATALOG . 'view/theme/' . $theme_path . '/template/extension/module/' . $this->request->post['twig'] . '.twig')){
			$this->error['twig'] = $this->language->get('error_twig');
		}

		return !$this->error;
	}
}